CN203894911U - Mud-rock flow infrasound monitoring alarm device - Google Patents
Mud-rock flow infrasound monitoring alarm device Download PDFInfo
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- CN203894911U CN203894911U CN201420197774.3U CN201420197774U CN203894911U CN 203894911 U CN203894911 U CN 203894911U CN 201420197774 U CN201420197774 U CN 201420197774U CN 203894911 U CN203894911 U CN 203894911U
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Abstract
The utility model relates to a mud-rock flow infrasound monitoring alarm device which is characterized by comprising a data acquisition unit (1), a data processing unit (2), an information alarm unit (3), a communication unit (4), a data storage unit (5) and a system power supply unit (6) for mud-rock flow infrasound signals. The data acquisition unit (1), the information alarm unit (3), the communication unit (4), the data storage unit (5) and the system power supply unit (6) are connected with the data processing unit (2) respectively. The data acquisition unit (1) is composed of a sensor (1-1), an amplification circuit (1-2), a second-order active low-pass filter (1-3), an amplitude conditioning circuit (1-4), a comparison circuit comparison circuit (1-5) and an ADC circuit (1-6). The data processing unit (2) is composed of an initial data extraction circuit (2-1), a digital low-pass filtering circuit (2-2), a threshold duration T determination circuit (2-3) and a data analyzing and recording circuit (2-4).
Description
Technical field
The utility model relates to electronic monitoring equipment field, relates in particular to a kind of debris flow infrasound monitoring alarm.
Background technology
Rubble flow is to be a kind ofly extensively distributed in countries in the world some have the disaster in extreme terrain, landforms situation area.Shi Duoshanzhi state of China, is subject to the impact of fracturation structure, and many massifs are precipitous, and rock texture is unstable, and forest-covered area is few, runs into cloudy weather for several days running, the Heavy Rain of monsoon climate, and serious mud-stone flow disaster often occurs.Real-time monitoring, early warning and emergency disposal demand to this class disaster are very urgent.
In the acoustic emission signal of rubble flow in formation and motion process, comprise infrasonic sound composition, this infrasonic sound composition is a kind of frequency can be heard frequency of sound wave scope sound wave lower than the mankind, frequency range is roughly 4Hz～20Hz, for deterministic signal (having definite time domain and frequency domain characteristic), decay hardly and approximate the velocity of sound, taking air as medium transmission.Because debris flow infrasound speed is about 340 meter per seconds, much larger than mud-rock flow movement speed (being generally 10 meter per second left and right), if can detect these small infrasound signals, before rubble flow arrives, warning device just can have enough leads to realize warning, for the rule of human research's rubble flow and prevent and reduce natural disasters, there is important meaning.
Debris flow infrasound warning device of the prior art exists because the environmental interference such as vehicle passes through cause the defect that rate of false alarm is higher.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the utility model provides a kind of debris flow infrasound monitoring alarm, is processed and is differentiated, to realize giving warning in advance of mud-stone flow disaster by the infrasound signals that rubble flow is produced.
The technical scheme that the utility model adopts is as follows:
A kind of debris flow infrasound monitoring alarm, comprises data acquisition unit (1), data processing unit (2), information alarm unit (3), communication unit (4), data storage cell (5) and the SPU (6) of debris flow infrasound signal; Wherein data acquisition unit (1), information alarm unit (3), communication unit (4), data storage cell (5) and SPU (6) are connected with data processing unit (2) respectively, and SPU (6) provides operating voltage for each unit; Wherein data acquisition unit (1) is for gathering and change acquisition debris flow infrasound raw electrical signal to debris flow infrasound signal, described data processing unit (2), for debris flow infrasound raw electrical signal is processed, obtains debris flow infrasound electric signal after treatment; Debris flow infrasound raw electrical signal and debris flow infrasound raw electrical signal after treatment are stored into respectively in data storage cell (5), and send information alarm command to information alarm unit (3), debris flow infrasound raw electrical signal and debris flow infrasound raw electrical signal after treatment are sent to remote monitoring center (6) by communication unit (4) simultaneously.
Described data acquisition unit (1) is made up of sensor (1_1), amplifying circuit (1_2), second order active low-pass filter (1_3), amplitude modulate circuit (1_4), comparator circuit (1_5) and adc circuit (1_6); Wherein said sensor (1_1), for completing the conversion of acoustical signal to electric signal, converts low-frequency range acoustical signal to electric signal and exports; The electric signal of described sensor output is transferred to amplifying circuit (1_2) and carries out power amplification, then completes high frequency noise filtering via second order active low-pass filter (1_3); Electric signal after filter away high frequency noise is by amplitude modulate circuit (1_4) and comparator circuit (1_5).When comparator circuit (1_5) output high level (Fig. 4), enable adc circuit (1_6) and carry out data acquisition.
Described data processing unit (2) extracts circuit (2_1), digital low-pass filtering circuit (2_2), threshold value duration T decision circuit (2_3) and data analysis writing circuit (2_4) by raw data and forms; Wherein, described raw data is extracted circuit (2_1) and from data storage cell (5), is extracted data, the data of extracting via digital low-pass filtering circuit (2_2) carry out filtering, again via threshold value duration T decision circuit (2_3) and data analysis writing circuit (2_4), finally the data after analytic record are stored in data storage cell (5); Data analysis writing circuit (2_4) judges the whether corresponding rubble flow signal of described data, if it is alarm command is sent to information alarm unit (3); And by communication unit (4), data are sent to remote monitoring center (6) and data storage cell (5); If not, only send data to data storage cell (5) by communication unit (4).After the alarm command that information alarm unit (3) sends at the data analysis writing circuit (2_4) receiving in data processing unit (2), complete local sound and light alarm.
Preferably, SPU (6) is made up of solar panel and lead-acid accumulator, and power supply unit, for whole system provides multiple direct current supply voltage, ensures that each power makes full use of and each module is normally moved.
Preferably, system power supply mode is except adopting the power supply of 12V lead-acid accumulator and solar panels, and the power supply mode that also can add 220V alternating current improves stability and the practicality of system.
Preferably, ADC Acquisition Circuit, can select to be applicable to gather with low frequency signal, replaces with other AD chips of programmable-gain function, improves accuracy of data acquisition.
Advantage of the present utility model mainly contains: 1, two kinds of system power supply modes is provided, improves system stability, and 2, filtering circuit adopts second order active low-pass filter, frequency change, impedance variation and load increase can not affect the reliability of system.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of instructions, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.
Brief description of the drawings
Fig. 1 shows according to the structural representation of the debris flow infrasound monitoring alarm of an embodiment of the utility model;
Fig. 2 shows according to the structural representation of the data acquisition unit of an embodiment of the present utility model;
Fig. 3 shows according to the structural representation of the debris flow infrasound monitoring alarm of another embodiment of the utility model;
Fig. 4 shows the Output rusults figure according to the comparator circuit of an embodiment of the present utility model;
Fig. 5 shows the threshold value duration T decision circuit according to an embodiment of the present utility model;
Fig. 6 A and Fig. 6 B show according to the sound light alarming circuit of an embodiment of the present utility model;
Fig. 7 shows Rule of judgment schematic diagram.
Embodiment
Technological means and effect of taking for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to embodiment, feature and effect thereof according to a kind of debris flow infrasound monitoring alarm the utility model proposes, be described in detail as follows.
As shown in Figure 1, in an embodiment of the present utility model, a kind of debris flow infrasound monitoring alarm, the data acquisition unit (1), data processing unit (2), information alarm unit (3), communication unit (4), data storage cell (5) and the SPU (6) that comprise debris flow infrasound signal, wherein data acquisition unit (1), information alarm unit (3), communication unit (4) and data storage cell (5) are connected with data processing unit (2) respectively.SPU (6) provides operating voltage for each unit; Data processing unit (2) is for processing debris flow infrasound raw electrical signal, obtain debris flow infrasound electric signal after treatment, debris flow infrasound raw electrical signal and debris flow infrasound raw electrical signal after treatment are stored into respectively in data storage cell (5), and send information alarm command to information alarm unit (3), debris flow infrasound raw electrical signal and debris flow infrasound raw electrical signal after treatment are sent to remote monitoring center (6) by communication unit (4) simultaneously.
As shown in Figure 2, in an embodiment of the present utility model, the demand of carrying out data acquisition for making data acquisition unit (1) institute output signal amplitude can meet adc circuit, need to amplify processing by amplifying circuit by signal; Meanwhile, due to the interference of complex environment, in collection signal can doping a large amount of high frequency noises, affect identification and the processing of low frequency useful signal, by second order active low-pass filter (1_3) by neighbourhood noise and high-frequency signal filtering; Low frequency signal after denoising can meet the demand that adc circuit gathers.Described data acquisition unit (1) is made up of sensor (1_1), amplifying circuit (1_2), second order active low-pass filter (1_3), amplitude modulate circuit (1_4), comparator circuit (1_5) and adc circuit (1_6).Wherein said sensor (1_1), for completing the conversion of acoustical signal to electric signal, converts low-frequency range acoustical signal to electric signal and exports; The electric signal of described sensor output is transferred to amplifying circuit (1_2) and carries out power amplification, then completes high frequency noise filtering via second order active low-pass filter (1_3); Electric signal after filter away high frequency noise is by amplitude modulate circuit (1_4) and comparator circuit (1_5).When comparator circuit (1_5) output high level (Fig. 4), enable adc circuit (1_6) and carry out data acquisition.
Because debris flow infrasound signal has suddenly, for continuing to monitor and processing meeting serious waste human and material resources of signal, the efficiency of monitoring, alarming work is sharply declined.According to various infrasonic waves are produced to environment, analyze, study and sum up as the sample data of vehicle, earthquake, rubble flow, record the attributes such as various infrasonic amplitudes, duration simultaneously, can more accurately judge when rubble flow occurs infrasonic attribute.Varying environment produces the frequency range difference of the concentration of energy of infrasound signals, and the duration is not identical yet.For example: when rocket launching, nuclear explosion or fly past, its energy mainly concentrates on 0.02～4Hz, is several mv while converting electric signal to, and the duration is about 30s (second); The infrasonic wave frequency that sea beat seashore excites is conventionally at 2～5Hz, and while converting electric signal to, fluctuation range is larger, and the duration under a certain amplitude is very short, is several seconds; It is 0.02～0.05Hz that high wind is blowed steep hill generation infrasonic wave frequency, and converting electric signal to is tens mv, and the duration is 20～50s; And rubble flow occur time produce infrasonic wave concentration of energy at 5～20Hz, convert electric signal to and be about 50mv, the duration be greater than 3min (minute).Be V by amplitude modulate circuit (1_4) by the conditioning of front end output signal, the benchmark comparative voltage V1 that sets in advance comparator circuit (1_5) is 2 volts, the T1 that sets in advance threshold value duration T decision circuit is 3min, as the benchmark comparative voltage V1 of front end collection signal output voltage V > comparator circuit (1_5), and the T1 of duration T > threshold value duration T decision circuit, judges that collection signal is debris flow infrasound signal.
As shown in Figure 3, in an embodiment of the present utility model, data processing unit (2) is for processing the debris flow infrasound raw electrical signal of data acquisition unit (1) output.Described data processing unit (2) extracts circuit (2_1), digital low-pass filtering circuit (2_2), threshold value duration T decision circuit (2_3) and data analysis writing circuit (2_4) by raw data and forms.Wherein, described raw data is extracted circuit (2_1) and from data storage cell (5), is extracted data, the data of extracting via digital low-pass filtering circuit (2_2) carry out filtering, again via threshold value duration T decision circuit (2_3) and data analysis writing circuit (2_4), finally by the data after analytic record to store in data storage cell (5).
According to the amplitude modulate circuit (1_4) in data acquisition unit (1) and comparator circuit (1_5), judge in conjunction with the threshold value duration T decision circuit (2_3) in data processing unit (2) whether collection signal is the conclusion of debris flow infrasound signal simultaneously; Selecting whether to carry out warning message according to judged result sends and data storage; .As the benchmark comparative voltage V1 of front end collection signal output voltage V > comparator circuit (1_5), and the T1 of duration T > threshold value duration T decision circuit, can judge that collection signal is debris flow infrasound signal.If judge the corresponding rubble flow signal of described data, alarm command be sent to information alarm unit (3); And by communication unit (4), data are sent to remote monitoring center (6) and data storage cell (5); If judge the not corresponding rubble flow signal of described data, only send data to data storage cell (5) by communication unit (4).After the alarm command that information alarm unit (3) sends at the data analysis writing circuit (2_4) receiving in data processing unit (2), complete local sound and light alarm.
As shown in Figure 4, in an embodiment of the present utility model, in the time of amplitude modulate circuit (1_4) output signal, in order to determine the intensity size of infrasound signals, design comparator circuit (1_5) for signal amplitude intensity size is judged.The amplitude that the output signal of amplitude modulate circuit (1_4) and comparator circuit (1_5) are set compares, if comparator circuit (1_5) output high level triggers adc circuit and carries out data acquisition.
As shown in Figure 5, in an embodiment of the present utility model, threshold value duration T decision circuit, by the RC circuit size of setting specific threshold duration.
As shown in Fig. 6 A and Fig. 6 B, in an embodiment of the present utility model, sound light alarming circuit is made up of buzzer drive circuit (6_1) and warning indicating circuit (6_2).The principle of work of Fig. 6 A buzzer drive circuit (6_1) is in the time that BELL end is high level, after 1 pin of Q3 and 3 pin conductings, and 2 pin and the also conducting of 3 pin, now 2 pin are low level, U6 conducting, hummer sends chimes of doom; The principle of work of Fig. 6 B warning indicating circuit (6_2) is in the time that LED0 end is high level, after 1 pin of Q10 and 3 pin conductings, and 2 pin and the also conducting of 3 pin, now 2 pin are low level, RED pilot lamp is bright.So realize sound and light alarm, determine that by judging signal is debris flow infrasound signal, just can hear chimes of doom, red led is pressed certain frequency flicker simultaneously.
In addition, in the utility model, consider that practicality and electric energy efficiently utilize, in an embodiment of the present utility model, SPU (6) is made up of solar panel and lead-acid accumulator, power supply unit, for whole system provides multiple direct current supply voltage, ensures that each power makes full use of and each module is normally moved.
In an embodiment of the present utility model, system power supply mode is except adopting the power supply of 12V lead-acid accumulator and solar panels, and the power supply mode that also can add 220V alternating current improves stability and the practicality of system.
In an embodiment of the present utility model, ADC Acquisition Circuit, can select to be applicable to gather with low frequency signal, replaces with other AD chips of programmable-gain function, improves accuracy of data acquisition.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (7)
1. a debris flow infrasound monitoring alarm, it is characterized in that, comprise data acquisition unit (1), data processing unit (2), information alarm unit (3), communication unit (4), data storage cell (5) and the SPU (6) of debris flow infrasound signal;
Wherein data acquisition unit (1), information alarm unit (3), communication unit (4), data storage cell (5) and SPU (6) are connected with data processing unit (2) respectively, and SPU (6) provides operating voltage for each unit;
Described data acquisition unit (1) is for gathering and change acquisition debris flow infrasound raw electrical signal to debris flow infrasound signal, described data processing unit (2), for debris flow infrasound raw electrical signal is processed, obtains debris flow infrasound electric signal after treatment; Debris flow infrasound raw electrical signal and debris flow infrasound raw electrical signal after treatment are stored into respectively in data storage cell (5), and send information alarm command to information alarm unit (3), debris flow infrasound raw electrical signal and debris flow infrasound raw electrical signal after treatment are sent to remote monitoring center (6) by communication unit (4) simultaneously.
2. debris flow infrasound monitoring alarm according to claim 1, is characterized in that,
Described data acquisition unit (1) is made up of sensor (1_1), amplifying circuit (1_2), second order active low-pass filter (1_3), amplitude modulate circuit (1_4), comparator circuit (1_5) and adc circuit (1_6).
3. debris flow infrasound monitoring alarm according to claim 2, is characterized in that,
Wherein said sensor (1_1), for completing the conversion of acoustical signal to electric signal, converts low-frequency range acoustical signal to electric signal and exports; The electric signal of described sensor output is transferred to amplifying circuit (1_2) and carries out power amplification, then completes high frequency noise filtering via second order active low-pass filter (1_3); Electric signal after filter away high frequency noise, by amplitude modulate circuit (1_4) and comparator circuit (1_5), when comparator circuit (1_5) output high level, enables adc circuit (1_6) and carries out data acquisition.
4. according to the arbitrary described debris flow infrasound monitoring alarm of claim 1-3, it is characterized in that,
Described data processing unit (2) has raw data to extract circuit (2_1), digital low-pass filtering circuit (2_2), threshold value duration T decision circuit (2_3) and data analysis, writing circuit (2_4).
5. debris flow infrasound monitoring alarm according to claim 4, is characterized in that,
Described raw data is extracted circuit (2_1) and from data storage cell (5), is extracted data, the data of extracting via digital low-pass filtering circuit (2_2) carry out filtering, again via threshold value duration T decision circuit (2_3) and data analysis writing circuit (2_4), finally the data after analytic record are stored in data storage cell (5).
6. debris flow infrasound monitoring alarm according to claim 5, is characterized in that,
Described data analysis writing circuit (2_4) judges the whether corresponding debris flow infrasound signal of described data, if it is alarm command is transferred to information alarm unit (3); And by communication unit (4), data are sent to remote monitoring center (6) and data storage cell (5); Only send data in data storage cell (5) by communication unit (4) if not,, after the alarm command that information alarm unit (3) sends at the data analysis writing circuit (2_4) receiving in data processing unit (2), complete local sound and light alarm.
7. debris flow infrasound monitoring alarm according to claim 6, is characterized in that,
SPU (6) is made up of solar panel and lead-acid accumulator, and power supply unit provides multiple direct current supply voltage for whole system.
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| CN201420197774.3U CN203894911U (en) | 2014-04-22 | 2014-04-22 | Mud-rock flow infrasound monitoring alarm device |
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| CN201420197774.3U CN203894911U (en) | 2014-04-22 | 2014-04-22 | Mud-rock flow infrasound monitoring alarm device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900013A (en) * | 2015-06-09 | 2015-09-09 | 东华大学 | Mud-rock flow monitoring and alarming system based on infrasonic wave |
| CN105894758A (en) * | 2014-10-27 | 2016-08-24 | 熊清远 | Displacement monitoring alarm device based on Internet of things application |
| CN106197654A (en) * | 2016-07-14 | 2016-12-07 | 中国地质大学（北京） | A kind of debris flow infrasound monitoring system and method based on GPRS communication |
| CN106886174A (en) * | 2015-12-15 | 2017-06-23 | 航天科工惯性技术有限公司 | Debris flow infrasound signal front end post circuit |
| CN108344495A (en) * | 2018-02-13 | 2018-07-31 | 中国科学院光电研究院 | A kind of infrasonic measuring device and measuring method |
| CN108828186A (en) * | 2018-04-28 | 2018-11-16 | 四川理工学院 | A kind of slide prediction device with wide area monitoring function |
| CN110196448A (en) * | 2019-05-21 | 2019-09-03 | 成都信息工程大学 | A kind of landslide infrasound signals recognition methods |
-
2014
- 2014-04-22 CN CN201420197774.3U patent/CN203894911U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894758A (en) * | 2014-10-27 | 2016-08-24 | 熊清远 | Displacement monitoring alarm device based on Internet of things application |
| CN104900013A (en) * | 2015-06-09 | 2015-09-09 | 东华大学 | Mud-rock flow monitoring and alarming system based on infrasonic wave |
| CN106886174A (en) * | 2015-12-15 | 2017-06-23 | 航天科工惯性技术有限公司 | Debris flow infrasound signal front end post circuit |
| CN106886174B (en) * | 2015-12-15 | 2019-03-29 | 航天科工惯性技术有限公司 | Debris flow infrasound signal front end post circuit |
| CN106197654A (en) * | 2016-07-14 | 2016-12-07 | 中国地质大学（北京） | A kind of debris flow infrasound monitoring system and method based on GPRS communication |
| CN108344495A (en) * | 2018-02-13 | 2018-07-31 | 中国科学院光电研究院 | A kind of infrasonic measuring device and measuring method |
| CN108828186A (en) * | 2018-04-28 | 2018-11-16 | 四川理工学院 | A kind of slide prediction device with wide area monitoring function |
| CN110196448A (en) * | 2019-05-21 | 2019-09-03 | 成都信息工程大学 | A kind of landslide infrasound signals recognition methods |
| CN110196448B (en) * | 2019-05-21 | 2020-06-16 | 成都信息工程大学 | Landslide infrasound signal identification method |
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